package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.AttrAttrgroupRelationService;
import com.atguigu.gulimall.product.service.AttrGroupService;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;

@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    private AttrAttrgroupRelationService relationService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private AttrGroupService attrGroupService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        baseMapper.insert(attrEntity);

        //保存关联关系
        if (attr.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){//基本属性才进行修改
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationService.save(relationEntity);
        }
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<>();

        if (catelogId!=0){
            wrapper.eq("catelog_id",catelogId);
        }
        wrapper.eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        String key= (String) params.get("key");
        if (StringUtils.isNotBlank(key)){
            wrapper.and((item)->{
                item.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params),wrapper);

        PageUtils pageUtils = new PageUtils(page);

        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map(attrEntity -> {
            AttrRespVo respVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, respVo);

            //设置分类和分组的名字
            if ("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity relationEntity = relationService.getOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (relationEntity!=null&&relationEntity.getAttrGroupId() != null) {
                    AttrGroupEntity groupEntity = attrGroupService.getById(relationEntity.getAttrGroupId());
                    respVo.setGroupName(groupEntity.getAttrGroupName());
                }

            }

            CategoryEntity categoryEntity = categoryService.getById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                respVo.setCatelogName(categoryEntity.getName());
            }


            return respVo;
        }).collect(Collectors.toList());

        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrEntity attrEntity = baseMapper.selectById(attrId);
        AttrRespVo respVo = new AttrRespVo();
        BeanUtils.copyProperties(attrEntity,respVo);

        //设置分组信息
        if (attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            AttrAttrgroupRelationEntity relationEntity = relationService.getOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
            if (relationEntity!=null&&relationEntity.getAttrGroupId()!=null){
                AttrGroupEntity attrGroupEntity = attrGroupService.getById(relationEntity.getAttrGroupId());
                respVo.setAttrGroupId(relationEntity.getAttrGroupId());
                respVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }
        }

        //设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] path = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(path);
        CategoryEntity categoryEntity = categoryService.getById(catelogId);
        if (categoryEntity!=null){
            respVo.setCatelogName(categoryEntity.getName());
        }
        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity=new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);
        int count = relationService.count(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));

        //修改分组关联
        if (attr.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrId(attr.getAttrId());
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            if (count>0){
                relationService.update(relationEntity,new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));
            }else{
                //新增分组关联
                relationService.save(relationEntity);
            }
        }

    }

    /**
     * 根据分组id查找关联的所有基本属性
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> relationEntities = relationService.list(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> collect = relationEntities.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if (collect.isEmpty()){
            return null;
        }
        List<AttrEntity> entities = baseMapper.selectBatchIds(collect);
        return entities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] groupRelationVo) {
        List<AttrGroupRelationVo> voList = Arrays.asList(groupRelationVo);
        List<AttrAttrgroupRelationEntity> entities = voList.stream().map(item -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationService.deleteBatch(entities);
    }

    /**
     * 获取当前分组没有关联的属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的分组
        List<AttrGroupEntity> group = attrGroupService.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationService.list(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
//        List<AttrEntity> attrEntities = baseMapper.selectBatchIds(attrIds);
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<>();
        queryWrapper.select("attr_id").in("attr_id",attrIds).eq("search_type",1);
        List<AttrEntity> attrEntities = baseMapper.selectList(queryWrapper);
        List<Long> collect = attrEntities.stream().map(attr -> attr.getAttrId()).collect(Collectors.toList());
        return collect;
    }
}